I have just seen this interesting thread and whilst grounding and arresters are sensible precautions, sensitive electronics like cameras and computers need good screening to survive close lightning strikes. Very powerful RF fields are generated by the strike together with high static fields
I recall in the 70s a friend living in a small block of flats in London. The chip shop opposite was struck by lightning and burnt down. Most of the TVs in the flats died due to damage to their preamps whether they were plugged in or connected to antennas or not !
So think Faraday cages as well in bad storms
B